Resilient wheel.



I. SAPORIT &1.VlCENTIN.

RESILIENT WHEEL.

APPuATmN FILED MAY2o,1914.

1, 1 87,557, vPatented June 20, 1916.

mven/oms:

@WJ Kaw. y fn?, fwn/,Mw 7%@ THE CQLUMBIA PLANOGRAPH co.. WASHINGTON. D.C, I

JOHN SAPORIT, OF EVEB'ETT, AND JOHN VICENTIN, 0FyCAMBRIDGE;INIASSACHUSETTS.

RESILIENT WHEEL.

niemeer.

Specification of Letters Patent.

Patented .i une 29, 1916.

Application led May 2G, 19,14. Serial No. 839,884.

To all lwhom t may concern:

Be 1t known that we, JOHN SAroRrr and Jona* VronNrrN, both citizensofthe UnitedV States, and residents of Everett and Gambridge,respectively, county of Middlesex, and Commonwealth (whose post-oiliceaddresses are, respectively, 23 Avon street, Everett, Massachusetts, and77 Main street, Cambridge, Massachusetts,) have invented an Improvementin Resilient Vheels, of which the following description, in connectionywith the accompanying drawings, is a specication, like characters onthe drawings representing like parts.

This invention relates to an improvement in resilient wheels.

ln the drawings: Figure 1 is a side elevation of our invention. Fig. 2is a similar view with some of the parts removed.v Fig. 3 is across-section taken on the line 3 3 of Fig. 2.

The particular illustration of our resilient wheel which we have shownin the accompanying drawingsv is provided with a solid rubber' tire 1,'which is supported upon a grooved rim 2 in any usual manner. Solidlyattached to the inside periphery of said rim 2, is a ring 3 provided atvarious equidistant points on itsy inside periphery with squaredrecesses 4, wherein are nested blocks 5 which hold leaf springs 6. Inthe drawings we have shown four such sets of blocks and springs, but itis obvious that this number may be increased or diminished as thenecessities of a, particular application may require. ln the p articularillustration shown herein, we have shown the blocks 5 as provided withsquared openings wherein the leaf springs 6 are held by means of setscrews 16.

` integral with the hub 7 is a disk shaped portion 8 which lies in aplane perpendicular to the axis of the wheel and which is of a suiicientdiameter to cover a part of one side of the ring 3. A similar diskshaped part 9 surrounds the hub on the other side of the wheel and is ofsubstantially the same diameter as the disk 8. This disk 9 is removablyattached to its companion disk 8 by means of securing elements 17 andwhen so attached makes with the disk 8, a complete inclosure for thesprings 6, and the expansion ring 11, and so securely holds the ring 3and its connected parts to the rest of the wheel. The ring 3 however isnot tightly of Massachusetts, p

pinched between the inside faces of the disks 8 and 9 but is allowedsuiiicient room kto allow radial and circumferential movement aspermitted by the springs 6 and thev post 13. We have shown the disk 9provided with openings 18 in order that the internal parts of the wheelmay be conveniently reached; and these openings are covered underordinary circumstances with a plate 19, which may be attached to thedisk 9 by means of screws or other similar means'. Of course anyordinary suitable covering device or devices may be applied for thispurpose without departing from the spirit of our invention, and the disk8 may also be provided with openings similar to those shown in disk 9.

In the drawings we have shown the central portions of the disks 8 and 9,next to the hub A7 formed in the shape of spokes 21; but of course anyform of connection between the peripheral portion of the disk 8 and thehub may be provided.

Made integral with the disk 8 is the ring l10 which is concentric withthe periphery of the ring 3 and upon whose outside periphery rests acircular expansion ring 11 made adj ustably expandible by means ofthreaded bolts 12, which pass through the ring 10 at convenient pointsand impinge againsty the inner periphery of said expansion ring. The:tree ends of the leaf springs 6 hereinbefore described bear againsttheoutside periphery of the expansion ring 11.

Made integral with the disk 8 is a triangular post 13 adapted to engagethe sides of a notch 14, provided at the inside periphery of the ring 3in order to prevent any considerable rotation of the ring 3 and theparts connected therewith relatively to the hub 7 and its variousconnected parts. Of course it is obvious that any desired number' ofsuch posts 13 and the corresponding notches 14k may be provided as theparticular circumstances of a given application might make advisable.

Having now described the details of one specific illustrative Jform ofour invention, we shall describe Yits mode of operation. As the hub 7 issubjected to the weight of the vehicle to which the wheel is attached,there is a tendency for the parts connected with the hub to move towardthe lower part of ring 3. r1`his tendency is yieldingly arrested by thesprings 6 which are interposed between the expansion ring 11 and thering e. The Companion 'diams and `9 being heid:

apart a given distance by the thickness-of the ring 10,r this ldistancebeing somewhat greaterthan thewidth of the ring 3, motion of the ring?)relatively to the hub 7 andl its connected parts is allowed. The notch14 in the ring 3 is sufliciently deep and sufiiciently Wide to permit ofthe free relativefniovement of the hubY 7 and'itsconnected partsrelatively to the ring 3 and still to provide for:

the impingenie'nt of the post '13 against one or the other ofthe sidesof the notch 14, in order to transmit rotary movement from the hub 7 andits connected parts to the ring 3 and its connected parts.

Of course we may" provide va Ypneumatic tire instead of the solid rubbertire l, 'withf out departing from the spirit of our invenfV tion.V y

We have yfound it nio-st practicable Lin practice to construct all ofthe parts hereinbefore'described except the tire, of metal;

ybut of coursel it may become expedient in 1. In a wheel, a riin, a ringconnected toy the inner periphery thereof provided with arecess adaptedto bevengaged byS a corresponding projection, and provided: withrecesses for ho-lding spring supporting means, spring` supporting meansnested in Vsaid frecesses, curved free-ended leaf springs held. by saidspring supporting means so arranged that the concavities `of the springslie toward the hub, and- Gordesv of this patentmay be obtained for vecents each, by addressing the "Commissioner et Patents,

Washington, D. C. l i

kso that whatever may be the pressure exerted upon said springs theoutward movement of their ends is unrestricted, a hub, a disk shapedplate attached thereto and bearing a projection adapted to register withsaid iirst named recess in said ring, a collar made integral ywith saiddisk shaped plate, an

. expansion ringsurrounding and adjustably supported upon said collar,and adjusting screws perforating said collar and supporty ing saidexpansion ring, upon Whichf'ring lbear the free'ends of said springs.

'2. In a wheel, a rim, a` hub, and means connecting the hub and rimincluding a dish shaped plate attachedk to thehub and pro-V vided with acollar integral therewith, an expansion ring adjustably mountedV uponsaid collar, leafV springs bearing upon said l ring held in springretaining blocks, blocks for retaining said springs, rand a ring at-1tached to the rim provided with openings wherein said blocks are nested.

Y 8. In a wheel, a rim 2, a hub 7, and means connecting said Y rim andVhub including curved leaf springs 6 having their V'concavi-Y tiesfacing the hubof the wheel, spring-retaining blocks 5 setin said rini,and an eXf pansion ring 1l upon which the free ends of said springs bearand which is adapted to bek

